# impedance matching calculator

**Impedance matching** is the electronics design practice of setting the input impedance (ZS) of an electrical load equal to the fixed output impedance (ZL) of the signal source to which it is ultimately connected, usually in order to maximize the power transfer and minimize reflections from the load. This only applies when both are linear devices

The term impedance is used for the resistance of a system to an energy source. For constant signals, this resistance can also be constant. For varying signals, it usually changes with frequency. The energy involved can be electrical, mechanical, magnetic or even thermal. The concept of electrical impedance is perhaps the most commonly known. Electrical impedance, like electrical resistance, is measured in ohms. In general, impedance has a complex value, which means that loads generally have a resistance to the source that is in phase with a sinusoidal source signal and reactance that is out of phase with a sinusoidal source signal. The total impedance (symbol: Z) is the vector sum of the resistance (symbol: R; a real number) and the reactance (symbol: X; an imaginary number).

In simple cases, such as low-frequency or direct-current power transmission, the reactance is negligible or zero and the impedance can be considered a pure resistance, expressed as a real number. In the following summary, we will consider the general case when the resistance and reactance are both significant, and also the special case in which the reactance is negligible.

**Impedance matching calculator free**

RF match calculator optimizer is a graphic impedance calculator. The program can be used to match sources to loads with networks made with impedances, …

http://www.suchitav.com?num=1232635785/2

**Analog Devices, Inc.: RF Impedance Matching Calculator**

RF Impedance Matching calculator. Loading tool…please wait …

Please choose an output match type. Output Match Type: Single-Ended, Differential. Select Input Type: Please choose one. Series Complex Load, S-Parameters, Parallel Complex Load. Please make sure value is within the expected range. Real Load Impedance: ?. (0 < RL <= 10000 ohms). Please make sure …

http://www.designtools.analog.com/RFIMPD/

SMC – Series Matching Calculator

SMC computes the lengths of two different types (impedances) of transmission lines. When these two lines are connected in series (in the right order!), they perform an impedance match between a 50 Ohm transmission line, and a complex impedance, usually the impedance at an antenna. The goal is to …

You can also directly print the results. SMC is a simple calculator with a fill in the blank user interface. …

www.seed-solutions.com/gregordy/Software/SMC.htm

**RF Match**

RF match calculator optimizer is a graphic impedance calculator. The program can be used to match sources to loads with networks made with impedances …

http://www.science.unitn.it/~fontana/rfmatch.html

**Matching Pi Attenuator Calculator**

Active calculator for resistive impedance matching pi attenuator circuits with results for resistance, attenuation, minimum attenuation, return loss, VSWR and reflection coefficient.

http://chemandy.com/calculators/matching-pi-attenuator-calculator.htm – Cached – Similar –

Download Series Matching Calculator Software, Series Matching

**Series Matching Calculator Software** 1.01. Description. “It computes the lengths of two different types (impedances) of transmission line” …

they perform an impedance match Between a 50 Ohm transmission line, and a complex impedance, usually the impedance at an antenna. The …

… when the impedance between the two different transmission line impedances increases. you can free download Series Matching Calculator Software 1.01 now. …

http://www.brothersoft.com/series-matching-calculator-software-191739.html

**Free online calculators: electronic circuit theory**

Determinant calculator 5 unknows Determinant calculator · Impedance calculator Enter your own electrical network and the applet will draw the impedance graph. Impedance matching calculator …

Norton’s Theorem · PI- & T- network resistive attenuation calculator design resistive PI & T- attenuators. Pi Attenuator Calculator Calculates the resistor values, attenuation, ‘impedance’, reflection coefficient, VSWR and return loss of a Pi attenuator …

http://www.educypedia.be/

**Network Impedance Matching Calculator**

The Impedance Matching Network is a loss less network often used to match between two resistive impedances Z1 and Z2. Given the values of Z1 and Z2 …